121324433324257 has 2 divisors, whose sum is σ = 121324433324258. Its totient is φ = 121324433324256.

The previous prime is 121324433324111. The next prime is 121324433324261. The reversal of 121324433324257 is 752423334423121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79719469387776 + 41604963936481 = 8928576^2 + 6450191^2 .

It is an emirp because it is prime and its reverse (752423334423121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121324433324257 - 2³⁹ = 120774677510369 is a prime.

It is not a weakly prime, because it can be changed into another prime (121324433324557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60662216662128 + 60662216662129.

It is an arithmetic number, because the mean of its divisors is an integer number (60662216662129).

Almost surely, 2^{121324433324257} is an apocalyptic number.

It is an amenable number.

121324433324257 is a deficient number, since it is larger than the sum of its proper divisors (1).

121324433324257 is an equidigital number, since it uses as much as digits as its factorization.

121324433324257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 46.

Adding to 121324433324257 its reverse (752423334423121), we get a palindrome (873747767747378).

The spelling of 121324433324257 in words is "one hundred twenty-one trillion, three hundred twenty-four billion, four hundred thirty-three million, three hundred twenty-four thousand, two hundred fifty-seven".